call explorer.exe from wsl shell by unix-style path
$ python3 -m pip install ExplorerFromWSL$ python3 -m pip uninstall ExplorerFromWSL$ explorer .or, simply
$ explorer$ explorer /mnt/c/Users/${wINDOWS_USER}/path/to/dir$ explorer /mnt/d/path/to/dirCAUTION need "Windows 10 May 2019 Update (version 1903)" or later.
This update enable to open wsl directory as network directory.
home directory
$ explorer ~$ explorer $HOMEany unix style path available
$ explorer ~/path/to/dir